Knife sharpener



FIG. 1 is a perspective view of the novel knife sharpener design of the present invention;

FIG. 2 is a top plan view of the novel sharpener of FIG. 1;

FIG. 3 is a rear elevation of the novel sharpener of FIG. 1;

FIG. 4 is a right side elevation of the novel sharpener of FIG. 1;

FIG. 5 is a left side elevation of the novel sharpener of FIG. 1;

FIG. 6 is a front elevation of the novel sharpener of FIG. 1;

FIG. 7 is a bottom plan view of the novel sharpener of FIG. 1; and,

FIG. 8 is a view similar fo FIG. 1 with the sharpener of the present invention with the handle extending outwardly from the left side rather than the right side.

The broken line showings of the cord are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a knife sharpener, as shown and described. 